Bump JustinBeckwith/linkinator-action from 1.11.0 to 2

Bumps [JustinBeckwith/linkinator-action](https://github.com/justinbeckwith/linkinator-action) from 1.11.0 to 2.
- [Release notes](https://github.com/justinbeckwith/linkinator-action/releases)
- [Changelog](https://github.com/JustinBeckwith/linkinator-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/justinbeckwith/linkinator-action/compare/v1.11.0...v2)

---
updated-dependencies:
- dependency-name: JustinBeckwith/linkinator-action
  dependency-version: '2'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/checkers.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v5
-    - uses: JustinBeckwith/linkinator-action@v1.11.0
+    - uses: JustinBeckwith/linkinator-action@v2
       with:
         linksToSkip: '^https://github.com/ ^https://www.jwz.org/ ^https://www.npmjs.com/ ^https://opensource.org/ ^https://unix.stackexchange.com/'
         paths: '*.md doc/*.md helpers/*.md'